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U41-TXM

U41-TXM

This high flux beamline with a plane grating monochromator was designed especially for X-ray microscopy endstations. It is dedicated to X-ray microscopy applications and hosts the HZB X-ray microscope as a fixed endstation.The new designed PGM1 beamline for the TXM endstation at section L06 uses again the undulator U41 which was moved from section L12 to L06. User operation at this new beamline started with the 2017-II beamtime allocation period.

The optical design of the HZB full-field TXM (unchanged) at the new BESSY II undulator beamline U41-L06-PGM1 (section L06) allows high spectral resolution of up to E/ΔE = 10000, 25 nm (half-pitch) spatial resolution and field of views in the range of 10-15 µm. A plane grating monochromator with a 800 l/mm grating provides the necessary high photon flux and in addition an energy resolution high enough for NEXAFS applications. The X-ray condenser (ellipsoidal shaped capillary) illuminates the object while the high resolving zone plate objective forms the enlarged image onto the CCD.